Silicone Wrist Strap Replacement For Polar M430 Gps Running Smart Sport Watch Band With Tools Wristband For Polar M400 Bracelet - Smart Accessories - AliExpress
CELLONIC® 2 m Replacement USB Cable Compatible with Polar M400 / A370 / A360 / RC3 Smartwatch Charging Cable Micro USB to USB A 2.0 Data Cable 2A, Sports Watch Fitness Watch:
Amazon.com: BoxWave Cable Compatible with Polar M400 (Cable by BoxWave) - DirectSync Cable, Durable Charge and Sync Cable for Polar M400 : Cell Phones & Accessories